Dolly



FIG. 1 is an isometric view of a dolly;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof.

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrating the dolly form no part of the claimed design. 

CLAIM The ornamental design for a dolly, as shown and described. 